Dear :

Thank you for your prompt delivey of [product]. There is, however, a mistake in shipping. The

number of [products] delivered by your company was whereas our order (No. ) was for only .

Our present needs are completely covered. As we cannot make use of the excess of order, we have put them in our warehouse to be held for you until we receive your instructions. Please tell us how to return the [number] [products] to you.

Sincerely,

[name]

[title]